One financial lesson they should teach in school is that most of the things we buy have to be paid for twice.
There’s the first price, usually paid in dollars, just to gain possession of the desired thing, whatever it is: a book, a budgeting app, a unicycle, a bundle of kale.
But then, in order to make use of the thing, you must also pay a second price. This is the effort and initiative required to gain its benefits, and it can be much higher than the first price.
I don't know if this is to mean you only paid for your games once, or if you're like me and have a ton of older games you bought again to have on Steam because they don't even have CD-Keys to be added manually from an original purchase (like Doom 1995).
I feel like there's a lot more to this than "pay it twice". If you're talking purely in dollars, then you'll want to consider maintenance and upkeep over the expected lifetime of the object and compare that to alternatives. Additionally, everything has an opportunity cost because no resource is limitless and you could have allocated it elsewhere. Finally, emotional and other intangible benefits are something that most people have a very difficult time quantifying.
If you want to say "consider more than just the purchase price" then I'm with you.
I don't love this example because enjoyment of the object isn't really a cost. If I buy a book or a videogame or a movie, the time it takes to enjoy the media is the value, not the cost.
If you're talking about maintenance and upkeep on your car, that is a different type of cost that has to be weighed against the cost and time expenditure of a bus pass or whatever your alternative was.
In other words I feel like this is a catchy phrase that kind of falls apart once you start to dig at it.
Anecdote: As a younger adult, I amassed a decent library of books, and at the time I felt it was worth the ongoing "cost" (and, for that time, it was). As an older adult though, having had to move this collection from house to house several times, I'm very much feeling that secondary cost to the point it's starting to not feel worth it for me to keep them.
I haven't gotten rid of any books yet, but I've stopped buying new books and I've been going to the library instead. That way, I get all the benefit of the book without any of the space/weight considerations.
Not OP but my example would be the last 2 books I bought. They are still sitting unread and I have not gotten the full value out if them yet as I haven't taken the time to consume them. Also education, I paid tuition and now I am working to keep my grades up so I can get the value from that.
I think everything is this way for sure. Certain things take up less space (mental or physical) but everything you own does take some sort of ongoing effort to maintain.
In the example of a shirt, there's washing it, but there's also simply storing it. In most cases, the effort and space a shirt takes is far outweighed by the benefit, but if you don't wear a particular shirt then it becomes a burden simply to keep it stored. This is most noticeably felt when moving to a new house.
Not saying I necessarily agree with this sentiment for "everything", but from a purely monetary point of view, here's a few example that I assume follow the spirit of this line of thinking:
Cars; you must pay for maintenance & fuels
Homes; you must pay for upkeep & utilities
Computers; electricity costs, and you could even go so far as to say the software you use